Improvement in sash-fasteners



T. THORN.

SASH-FASTENER.

.180,95 Patented Au .8,1876. No WW-J- Figi Q. mmmms UNITED STATES PATENT,OFFICE- THEODORE THORN, OF ST. CLAIR, PENNSYLVANIA.

IMPROVEMENT IN SASH-FASTENERS.

Specilication forming part of Letters Patent N0. 180,959, dated August8, 1876; application filed June 28, 1876.

To all whom it 'may concern:

Be it known that I, THEoDoEE THoRN, of St. Clair, in the county ofSchuylkill and State of Pennsylvania, have invented certain new anduseful Improvements in Sash-Lock; and I do hereby declare that thefollowing is afull, clear, and exact description thereof, which willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying draw ings, and to theletters of reference marked thereon, which form a part of thisspecification.

The nature of my invention consists in the novel construction andarrangement of a window-sash lock, in which a box and latch-bar areused, and combined with a pin and spring, and a grooved sash havingrecesses, as will be hereinafter more fully set forth, and delinitelyclaimed.

In the annexed drawing, Figure 1 is front elevation. Fig. 2 is a centralvertical section of the frame with the sashes removed; and

Figs. 3, 4, and 5 are details of the various working parts.

A represents the window-frame; B, the upper, and C the lower, sash. Thetwo vsashes are grooved longitudinally on both side edges to pass overmetal boxes attached to the inner sidesof the window-frame. On one sideis a box, D, struck up of sheet metal, or cast, to form two verticalparallel side bars, connected at the back by a series of cross-barstinthe top and? bottom ones of which are screwholes, for the passage ofscrews, to fasten the box to the window-frame. In this box is placed alatch-bar, G, with pin or projection a at its upper end. This end of thebar G is v forced outward by means of a spring, E, passed over and underthe cross-bars of the box, as shown. The lower end of the latch-bar Gprojects into a recess in the window-frame, and

in this recess is an arm, b, projecting upward from a horizontal shaft,d, which passes through the window-frame, and has a crank, handle, orkey, H, on its front end. In the edge ofthe sash B, in the bottom of thegroove thereon, are recesses x x corresponding in shape with the pin orlug a on the latch-bar G, said bar turning on a pin, z', as its fulcrum,as shown.

By turning the crank H downward the pin or arm b on the shaft d forcesthe lower end of the latch-bar outward, and draws back the upper end, sothat the pin a will get out of its recess, and the sash can then beraised or lowered at will.

On the opposite side of the window-frame is a similar box, D', whichsimply contains a spring, I, to hold the sash against the latchbar.

The lower sash is held by precisely similar means, only that the box andlatch-bar are reversed, and this latch-bar operated by an arm, b',extending downward from the shaft d.

It will thus be seen that by raising the crank the lower sash isunlocked, and by depressing the upper sash is unlocked.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

The combination of the box D, the shaft d, having arms b b', thelatch-bar G, having pin a, the spring E, and the recesses x x in theedge of the grooved sash, for the purposes herein set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

THEODORE THORN.

Witnesses:

C. H. WATSON, WM. B. UPPERMAN.

